WO2021093732A1 - Displacement inclination rectification method for building - Google Patents

Abstract

A displacement inclination rectification method for a building, comprising the following steps: determining a row of framework columns (3) having the minimum settlement amount, and acquiring a settlement difference between another row of framework columns (3) and said row of framework columns (3); digging a foundation, exposing former site bases (1, 2), and arranging new site bases (6); uniformly distributing inclined linear displacement tracks (7, 8) along a displacement direction; arranging a roller (9) and a steel channel on each of the displacement tracks (7, 8), and pouring concrete into the steel channels to form underpinning beams (10, 11), the underpinning beams (10, 11) being fixedly connected as a whole by means of a linking beam (12); horizontally driving sliding blocks by a drive mechanism so as to drive the framework columns (3) to move along the displacement tracks (7, 8) up to a displacement endpoint; and completing the inclination rectification when all the framework columns (3) are at the same horizontal height. The inclination rectification method is safer and better protects a building structure.

Description

Method for correcting tilting of buildings by shifting Technical field

The application relates to the field of building tilt correction, and in particular to a method for building tilt correction.

Background technique

Building tilt correction refers to the uneven settlement of the foundation due to the foundation, foundation or the building itself, and the upper structure of the building tilts away from the vertical position. When the tilt of the building exceeds the requirements of the relevant national regulations, it is serious Measures taken to ensure the safety of the building and restore its normal use function when it affects the safety and normal use of the building.

The inventor found that the current common methods for tilt correction include: stacking pressure correction method, soil excavation correction method, water immersion correction method, soil excavation and irrigation method, etc. Most of these methods increase the settlement on the side of the building where the settlement is small, so as to adjust the differential settlement of the entire foundation. So as to achieve the purpose of correcting the tilt of the building. These methods need to estimate the amount of settlement, and carry out a large number of theoretical calculations on the amount of soil digging and irrigation. The experience is very strong, and the theory is not mature; for the patent application number 201810821610.6 in the prior art, the "rotation shift frame structure building" Tilt correction method” and the patent “Rotational displacement correction method of brick-concrete structure building” with the application number of 201810821600.2, proposed the idea of using the rotation displacement technology to correct the tilt of the building, but the technology is aimed at the whole building Inclined, and for buildings with multiple rows of frame columns, the above-mentioned rotation correction method is not applicable when the settlement of the multiple rows of columns is inconsistent.

Summary of the invention

The purpose of this application is to provide a method for building displacement correction in view of the defects of the prior art. The pillars of the building are respectively built on the base, and the displacement rails of different heights are equipped according to the settlement amount. In the process of displacement, it is raised to the corresponding height at the same horizontal distance, and finally reaches the process of lifting each building column to the same horizontal position to complete the tilt correction process.

In order to achieve the above objectives, the following technical solutions are adopted:

A method for building displacement correction, including the following steps:

Determine the row of frame columns with the smallest settlement, and obtain the settlement difference between other rows of frame columns and the row of frame columns;

Excavate the foundation to expose the foundation of the old site, establish the end of the displacement, and arrange the foundation of the new site;

Corresponding to each frame column, from the corresponding old site foundation to the new site foundation, an inclined linear displacement track is arranged along the displacement direction, and the highest point of each displacement track is flush with the foundation corresponding to the frame column with the smallest settlement;

A roller is arranged on the displacement track corresponding to each frame column, and a channel steel parallel to the extension direction of the displacement track is arranged above the roller, and concrete is poured on the channel steel to form an underpinning beam;

The underpinning beam is connected with the steel bars pre-implanted in the frame column to be fixedly connected to the building as a whole, and the underpinning beams corresponding to all frame columns in the same row are fixed as a whole through the connecting beam;

A sliding rail is arranged on the longitudinal side of the frame column, the sliding rail is fitted with a sliding block that freely slides along the longitudinal direction of the sliding rail, and the sliding block is connected with a driving mechanism;

Cut off the connection between the frame column and the foundation of the old site, so that the weight of the building is completely supported by the shift rail;

The drive mechanism horizontally drives the slider to drive the frame column to move along the shift track until the end of the shift;

All the frame columns are at the same level, the tilt correction is completed, the frame columns are aligned with the foundation of the new site, and they are butt-supported;

After the butt support is stable, remove the slide rail-slider, underpinning beam and roller, and restore the ground.

Further, each frame column corresponds to two displacement rails, and the two displacement rails are respectively located on both sides of the frame column and clamp the corresponding frame column.

Further, a steel plate is arranged on the top surface of the displacement rail to cooperate with the roller to realize relative rolling.

Further, the lifting height of the displacement rail is equal to the settlement difference between the corresponding frame column and the frame column with the smallest settlement amount.

Further, each frame column corresponds to two underpinning beams parallel to the displacement track, and the two underpinning beams are respectively located on both sides of the frame column and clamp the corresponding frame column.

Further, the channel steel is used as the bottom template of the underpinning beam to pour concrete to form the underpinning beam, and the underpinning beam contacts the roller through the channel steel at the bottom.

Further, the sliding rail is arranged on the side of the underpinning beam, and adjacent sliding blocks are connected, so that all the sliding blocks are kept at the same level.

Further, the driving mechanism includes a traction device, and the output end of the traction device is connected to the sliding block, and the output end and the sliding block are kept at the same level; during the driving process of the traction device, the sliding block slides along with the climbing of the frame column. The rail slides.

Further, the roller is also fitted with a stopper for limiting the rolling of the roller when the building stops moving.

Furthermore, after the building is shifted to the end point, the section of the frame column is aligned with the foundation of the new site, the butt joint is formed by welding longitudinal steel bars, and concrete is poured to form a support.

Compared with the prior art, the advantages and positive effects of this application are:

(1) By pouring the oblique underpinning beam technology, the settlement of multiple rows of columns can be corrected. Different rows of columns with different settlements are equipped with shifting tracks with different lifting heights. In the process of horizontal shifting, the frame column The vertical height of the frame is changed to form a targeted height increase, and finally all the frame columns are at the same level, and targeted deviation correction is achieved;

(2) The frame columns are configured with corresponding displacement rails, so that they can be towed and displaced at the same time, so that the frame columns with different settlement differences are raised at the same time, while reducing the settlement difference and realizing tilt correction, compared with the traditional one-by-one lifting Or forced landing method to correct the tilt, the efficiency is higher, and the simultaneous operation can avoid the increase of the settlement difference between adjacent frame columns, and the one-by-one jacking or forced landing will cause the settlement difference of adjacent columns to further increase, resulting in further structural damage. Damage; the use of shifting tilt correction frame column settlement difference is in a state of continuous reduction until the level is equal, the tilt correction process is safer, and the structure of the building can be better protected;

(3) The sliding block and the sliding rail are used to cooperate with each other to offset the vertical displacement of the frame column during the lifting process, so that the traction force can always be kept perpendicular to the frame column, and all the blocks are At the same level, the positions of the columns can be mutually restricted to avoid the problem of bending of a single column during the displacement process; compared with the traditional method of continuous rope pulling and supporting beam to move, a slider is used By offsetting the vertical displacement change of the column lifting, the traction structure can always maintain the output state and avoid the problem that the continuous output of the lifting rope is too long due to the height.

Description of the drawings

The drawings of the specification forming a part of the application are used to provide a further understanding of the application, and the exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application.

Figure 1 is a side elevation view of the foundation with uneven settlement before tilt correction in Example 1 of the application;

Figure 2 is a basic plan view of the old site before tilt correction in Example 1 of the application;

Figure 3 is a side elevation view of the foundation of the old site exposed by the excavation of the foundation soil in Example 1 of the application;

Fig. 4 is a side elevation view of the foundation of the new site constructed in the shift direction in Example 1 of the application;

Fig. 5 is a basic plan view of the construction of a new site in the displacement direction in Example 1 of the application;

Fig. 6 is a side elevation view of the construction of the displacement track in Example 1 of the application;

Fig. 7 is a plan view of the construction of the displacement track according to the embodiment 1 of the application;

Fig. 8 is a side elevation view of a roller laid on the top surface of the shift track in Example 1 of the application;

FIG. 9 is a plan view of laying rollers on the top surface of the displacement track in Embodiment 1 of the application; FIG.

Figure 10 is a side elevation view of the underpinning beam and the connecting beam constructed in Example 1 of the application;

Figure 11 is a plan view of the construction of underpinning beams and connecting beams in Example 1 of the application;

Fig. 12 is a side elevation view of the traction equipment and the sliding rail-sliding block coordination provided in the embodiment 1 of the application;

Fig. 13 is a plan view of setting traction equipment and sliding rail-sliding block cooperation according to embodiment 1 of the application;

Fig. 14 is a side elevational view of the embodiment 1 of the application when the frame column is towed and moved to directly above the independent foundation of the new site;

Fig. 15 is a plan view of embodiment 1 of the application when the frame column is towed and displaced directly above the independent foundation of the new site;

Figure 16 is a side elevation view of the embodiment 1 of the application connecting the pillars of the building to the independent foundation of the new site;

Figure 17 is a side elevation view of the foundation soil backfill after removing the underpinning beams and rollers in Example 1 of the application;

Figure 18 is a plan view of the backfill of the foundation soil after removing the underpinning beam and rollers in Example 1 of the application;

19 is a schematic diagram of the iron wedge fixing the roller in the embodiment 1 of the application;

FIG. 20 is a schematic diagram of the process of moving the sliding rail and the sliding block in cooperation with the frame column in Embodiment 1 of the present application.

Among them, 1, the first original site foundation, 2, the second original site foundation, 3, the frame column, 4, the frame beam slab, 5, the foundation, 6, the new site foundation, 7, the first displacement track, 8, the second displacement Track, 9, roller, 10, first underpinning beam, 11, second underpinning beam, 12, connecting beam, 13, reaction pier, 14, traction equipment, 15, traction rope, 16, support, 17 , Iron wedges.

Detailed ways

It should be pointed out that the following detailed descriptions are all illustrative, and are intended to provide further explanations for this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and/or "including" are used in this specification, they indicate There are features, steps, operations, devices, components, and/or combinations thereof;

For the convenience of description, if the words "upper", "lower", "left" and "right" appear in this application, they only mean that they are consistent with the upper, lower, left, and right directions of the drawing itself, and do not limit the structure, but only It is for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

Term explanation part: The terms "installed", "connected", "connected", "fixed" and other terms in this application should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a whole; It can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, an internal connection between two components, or an interaction relationship between two components. For those of ordinary skill in the art The specific meaning of the above terms in the present invention can be understood according to the specific situation.

As described in the background art, the common methods of tilt correction in the prior art, such as stacking pressure correction method, soil digging correction method, immersion correction method, soil digging and irrigation method, etc., exist in actual construction. The problem is that most of these methods increase the settlement on the side of the building where the settlement is small, so as to adjust the differential settlement of the entire foundation. So as to achieve the purpose of correcting the tilt of the building. These methods need to estimate the amount of settlement, and carry out a large number of theoretical calculations on the amount of soil digging and irrigation, which are very empirical and the theory is not mature; for the idea of using the rotation displacement technology to correct the tilt of the building proposed in the prior art , But this technology is aimed at the overall tilt of the building, and for buildings with multiple rows of frame columns, the above-mentioned rotation correction method is not applicable when the settlement of the multiple rows of columns is inconsistent; in view of the above technical problems, this application A method of building displacement correction is proposed.

Example 1

In a typical implementation of the present application, as shown in FIGS. 1 to 20, a method for building displacement correction is proposed, which is particularly suitable for situations where there are multiple rows of frame columns and the settlement of different rows of frame columns is inconsistent.

The specific process is as follows:

Determine the row of frame columns with the smallest settlement, and obtain the settlement difference between other rows of frame columns and the row of frame columns;

Excavate foundation 5 to expose the foundation of the old site, establish the end of the displacement, and arrange the foundation of the new site;

Corresponding to each frame column 3, from the corresponding old site foundation to the new site foundation 6, an inclined linear displacement track is arranged along the displacement direction, and the highest point of each displacement track is flush with the foundation corresponding to the frame pillar with the smallest settlement amount ；

A roller 9 is arranged on the displacement track corresponding to each frame column, and a channel steel parallel to the extension direction of the displacement track is arranged above the roller, and concrete is poured on the channel steel to form an underpinning beam;

The underpinning beam is connected with the steel bars pre-implanted in the frame column to be fixedly connected with the building as a "chassis" for the displacement of the building. The underpinning beams corresponding to all frame columns in the same row are fixedly connected by the connecting beam 12 One

A sliding rail is arranged on the longitudinal side of the frame column, the sliding rail is fitted with a sliding block that freely slides along the longitudinal direction of the sliding rail, and the sliding block is connected with a driving mechanism;

Cut off the connection between the frame column and the foundation of the old site, so that the weight of the building is completely supported by the shift rail;

The drive mechanism horizontally drives the slider to drive the frame column to move along the shift track until the end of the shift;

After moving to the new site, the settlement difference and inclination values between the frame columns have been reduced to within the allowable values of the specifications. All frame columns are at the same level. The curved frame beams 4 of the upper structure are restored to a horizontal state, and the correction is completed. Tilt, align the frame column with the foundation of the new site and butt support 16;

After the butt support is stable, remove the slide rail-slider, underpinning beam and roller, and restore the ground.

Through the technology of pouring oblique underpinning beams, the settlement of multiple rows of columns can be corrected. Different rows of columns with different settlements are equipped with shifting rails with different lifting heights. During the horizontal shifting process, the vertical of the frame columns is corrected. The height is changed to form a targeted height increase, and finally all the frame columns are at the same level, and targeted correction is achieved.

Specifically, when determining the amount of settlement, the foundation corresponding to the row of frame columns with the smallest amount of settlement is used as the reference, that is, the first original site foundation 1, and other parts with a settlement greater than the row of frame columns correspond to the second original site foundation 2. The height of the foundation of the first original site is greater than the height of the foundation of the second original site; after the displacement, the height of the frame column with the smallest settlement amount remains unchanged, and the other frame columns are used as a benchmark to upgrade to the frame column with the smallest settlement amount Corresponding level, complete tilt correction.

Of course, corresponding to the frame column with the smallest amount of settlement, it needs to be displaced in the horizontal direction without lifting in the vertical direction, causing its correspondingly arranged first displacement rail 7 to be horizontally arranged, and the other frame columns are performing horizontally. While the direction is shifted, it also has a lifting amount in the vertical direction. Therefore, the correspondingly arranged second shift track 8 is an inclined linear shift track;

By analogy, for the frame column matching the first shift rail, the side surface is matched with the horizontally arranged first underpinning beam 10, and the frame column matching the second shift rail is matched with the side surface being inclined. The second underpinning beam 11 ensures that the underpinning beam is parallel to the displacement track.

Specifically, for the traction process to ensure stable horizontal displacement, corresponding equipment and methods are used, as shown in Figure 20, wherein the slide rails are arranged on the side of the underpinning beam and between adjacent sliding blocks Connected to keep all the sliders at the same level; the driving mechanism includes a traction device, the output end of the traction device is connected to the slider, and the output end and the slider are kept at the same level; during the driving of the traction device, The sliding block slides along the sliding rail as the frame column climbs;

The traction device 14 adopts a through jack. A reaction pier 13 is provided on one side of the building. The through jack is fitted on the reaction pier. The output end of the through jack is connected to the slider through a traction cable 15 so that the slider passes through the slide rail. Apply horizontal thrust to the frame column;

The sliding block and the sliding rail are used together to offset the vertical displacement of the frame column during the lifting process of the frame column by sliding up and down, so that the traction force can always be kept vertical to the frame column, and all the blocks are at the same level. The height can restrict the positions of the columns to each other, avoiding the problem of single column bending during the displacement process; compared with the traditional method of continuous rope pulling underpinning beams, the slider is used to offset the vertical column lifting. The change in direction displacement can keep the traction structure always in the state of output, avoiding the problem that the height of the lifting rope is too long and cannot be continuously output.

Further, for the configuration of the shift rails, each frame column corresponds to two shift rails, and the two shift rails are respectively located on both sides of the frame column and clamp the corresponding frame column; the top surface of the shift rail A steel plate is arranged to cooperate with the roller to realize relative rolling; the lifting height of the displacement rail is equal to the settlement difference between the corresponding frame column and the frame column with the smallest settlement amount;

For the setting of underpinning beams, each frame column corresponds to two underpinning beams parallel to the displacement track, and the two underpinning beams are respectively located on both sides of the frame column and clamp the corresponding frame column; the channel steel As the bottom template of the underpinning beam, concrete is poured to form the underpinning beam, and the underpinning beam contacts the roller through the channel steel at the bottom.

It should be pointed out that the displacement rails are located on both sides of the corresponding frame columns, and the underpinning beams are also located on both sides of the corresponding frame columns. That is, the underpinning beams are located directly above the shifting track, and the underpinning beams carry the entire building through the columns. After the weight is weighed, it can be vertically transferred to the shift rail through the roller and steel plate, and then transferred to the ground by the shift rail; if the underpinning beam and the shift rail are staggered, the force received by the load beam will pass through the roller After the axial transmission of the steel plate reaches the steel plate and the displacement track, the supporting force and the bearing point are not collinear, resulting in shear stress, resulting in the bending of the roller; the above-mentioned problems are avoided through the transmission of the vertical force;

Two underpinning beams are used to clamp and fix the underpinning beams from both sides of the frame column. The underpinning beams are supported by the two tracks arranged below to avoid the deviation of the output on both sides of the column. The force of the beam is transmitted vertically downwards, that is, underpinning beam-roller-steel plate-track foundation-foundation, to avoid shear stress on the roller, causing the roller to bend, thereby improving the stability of the entire displacement process Sex.

For the layout of the steel plate, since the top surface of the track is made of concrete material, the stress of the roller can be indirectly transmitted through the steel plate, avoiding the problem of concrete crushing caused by the line contact between the roller and the top surface of the track, and improving the operation of the roller. Smoothness; the upper and lower contacts of the roller are channel steel and steel plate respectively, which ensure the stability of their contact and the good transmission of the rolling process; in addition, it can also avoid the concrete being crushed by the line contact between the roller and other planes. This problem improves the safety during operation and ensures the integrity of the track and the underpinning beam.

Furthermore, during the movement of the building, the roller rolls out from the end of the underpinning beam close to the starting point of the displacement, and the rolled out roller is moved to the end of the underpinning beam close to the end of the shift and fills in the underpinning beam and steel plate. The gap between them forms a roller cycle to drive the building to move continuously; the roller is also matched with a stopper to limit the rolling of the roller when the building stops moving.

When the building is moved to a new site or needs to be temporarily stopped in the middle of the displacement, the stop must be driven behind the roller to prevent the building from retreating along the displacement track; in this embodiment, the stop is an iron wedge 17.

Furthermore, after the building is shifted to the end point, align the cross-section of the frame column with the foundation of the new site, weld longitudinal steel bars to form a butt, and pour concrete to form a support; when the concrete is cured to the required strength, the underpinning can be removed Beams and rollers.

The frame column is configured with the corresponding displacement track to make it carry out traction and displacement at the same time, so that the frame columns with different settlement differences are lifted at the same time, and the settlement difference is reduced at the same time, and the tilt correction is realized. Compared with the traditional lifting or forced landing The method is more efficient, and the simultaneous operation can avoid the increase in the settlement difference of adjacent frame columns, and the successive jacking or forced landing will cause the settlement difference of adjacent columns to further increase, causing further damage to the structure; The displacement correction frame column settlement difference is in a state of continuously decreasing until the level height is equal, the tilt correction process is safer, and the structure of the building can be better protected.

The above descriptions are only preferred embodiments of the application, and are not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims (10)

A method for building displacement correction, which is characterized in that it comprises the following steps: Determine the row of frame columns with the smallest settlement, and obtain the settlement difference between the other rows of frame columns and the row of frame columns; Excavate the foundation to expose the foundation of the old site, establish the end of the displacement, and arrange the foundation of the new site; Corresponding to each frame column, from the corresponding old site foundation to the new site foundation, an inclined linear displacement track is arranged along the displacement direction, and the highest point of each displacement track is flush with the foundation corresponding to the frame column with the smallest settlement; Arrange a roller on the displacement track corresponding to each frame column, and arrange a channel steel parallel to the extension direction of the displacement track above the roller, and pour concrete on the channel steel to form an underpinning beam; The underpinning beam is connected with the steel bars pre-implanted in the frame column and is fixedly connected to the building as a whole, and the underpinning beams corresponding to all frame columns in the same row are fixed as a whole through the connecting beam; A sliding rail is arranged on the longitudinal side of the frame column, the sliding rail is matched with a sliding block that freely slides along the longitudinal direction of the sliding rail, and the sliding block is connected with a driving mechanism; Cut off the connection between the frame column and the foundation of the old site, so that the weight of the building is completely supported by the shift rail; The drive mechanism horizontally drives the sliding block to drive the frame column to move along the shift track until the end of the shift; All the frame columns are at the same level, the tilt correction is completed, the frame columns are aligned with the foundation of the new site, and they are butt-supported; After the butt support is stable, remove the slide rail-slider, underpinning beam and roller, and restore the ground. The building displacement correction method according to claim 1, wherein each frame column corresponds to two displacement rails, and the two displacement rails are respectively located on both sides of the frame column and clamp the corresponding frame column. . The method for building displacement and tilt correction according to claim 2, wherein a steel plate is arranged on the top surface of the displacement rail to cooperate with a roller to realize relative rolling. The method of claim 3, wherein the lifting height of the shift rail is equal to the settlement difference between the corresponding frame column and the frame column with the smallest settlement amount. The building displacement correction method according to claim 1, wherein each frame column corresponds to two underpinning beams parallel to the displacement track, and the two underpinning beams are respectively located on both sides of the frame column, Clamp the corresponding frame column. The method of claim 5, wherein the channel steel is used as the bottom template of the underpinning beam and concrete is poured to form the underpinning beam, and the underpinning beam contacts the roller through the channel steel at the bottom. The building displacement correction method according to claim 1, wherein the sliding rail is arranged on the side of the underpinning beam, and adjacent sliding blocks are connected to keep all the sliding blocks at the same level. 7. The building displacement correction method according to claim 7, wherein the driving mechanism comprises a traction device, and the output end of the traction device is connected to the sliding block, and the output end and the sliding block are kept at the same level; During the driving process of the traction equipment, the sliding block slides along the sliding rail as the frame column climbs. The method of claim 1, wherein the roller is also matched with a stopper for limiting the rolling of the roller when the building stops moving. The method of claim 1, wherein after the building is shifted to the end point, the cross-section of the frame column is aligned with the foundation of the new site, the butt joint is formed by welding longitudinal steel bars, and the concrete is poured to form support.

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